required library

library(data.table)
library(tidyr)
## Warning: package 'tidyr' was built under R version 3.3.2
library(dplyr)
## Warning: package 'dplyr' was built under R version 3.3.2
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## Attaching package: 'dplyr'
## The following objects are masked from 'package:data.table':
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##     between, first, last
## The following objects are masked from 'package:stats':
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##     filter, lag
## The following objects are masked from 'package:base':
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##     intersect, setdiff, setequal, union
library(utils)
library(diveRsity)
## Warning: package 'diveRsity' was built under R version 3.3.2
library(ggplot2)
## Warning: package 'ggplot2' was built under R version 3.3.2
library(stargazer)
## Warning: package 'stargazer' was built under R version 3.3.2
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## Please cite as:
##  Hlavac, Marek (2018). stargazer: Well-Formatted Regression and Summary Statistics Tables.
##  R package version 5.2.1. https://CRAN.R-project.org/package=stargazer
library(rmarkdown)

Purple Hinged Rock Scallops (Crassadomea gigantea)

  • species range from Baja California to the Gulf of Alaska
  • filter feeders, up to 25 year life-span
  • vulnerable to overfishing
  • no current aquaculture production

Research Question?

  1. Do external metrics accurately predict internal adductor diameter?
  2. Does adductor diameter change as the scallop matures?

Methods

Collected data from our three grow out sites (Neah Bay, Dabob Bay, and Totten Inlet)

Gonad tissue samples were collected and histology slides were prepared to rate maturation stages of each individual scallop.

24 acini were rated for each individual and the mode across all 24 acini determined overall maturation stage for the organism.

Results

  • External metrics were significant (p-value<0.001) in determining internal adductor diameter.
  • Correlation values 0.59-0.6

Results

There was no significant relatioship between adductor diameter and gonad maturation stage.